utils: hide the cursor on progress indicator

cmd/caire/main.go

@@ -99,7 +99,8 @@ func main() {
 	spinnerText := fmt.Sprintf("%s %s",
 		utils.DecorateText("⚡ CAIRE", utils.StatusMessage),
 		utils.DecorateText("is resizing the image...", utils.DefaultMessage))
-	spinner = utils.NewSpinner(spinnerText, time.Millisecond*200, true)
+
+	spinner = utils.NewSpinner(spinnerText, time.Millisecond*100)
 
 	if *newWidth > 0 || *newHeight > 0 || *percentage || *square {
 		if *faceDetect && len(*cascade) == 0 {

grayscale.go

@@ -9,6 +9,7 @@ import (
 func (c *Carver) Grayscale(src *image.NRGBA) *image.NRGBA {
 	dx, dy := src.Bounds().Max.X, src.Bounds().Max.Y
 	dst := image.NewNRGBA(src.Bounds())
+
 	for x := 0; x < dx; x++ {
 		for y := 0; y < dy; y++ {
 			r, g, b, _ := src.At(x, y).RGBA()

utils/spinner.go

@@ -24,13 +24,13 @@ type Spinner struct {
 }
 
 // NewSpinner instantiates a new progress indicator.
-func NewSpinner(msg string, d time.Duration, hideCursor bool) *Spinner {
+func NewSpinner(msg string, d time.Duration) *Spinner {
 	return &Spinner{
 		mu:         &sync.RWMutex{},
 		delay:      d,
 		writer:     os.Stderr,
 		message:    msg,
-		hideCursor: hideCursor,
+		hideCursor: true,
 		stopChan:   make(chan struct{}, 1),
 	}
 }

utils/utils.go

@@ -8,7 +8,7 @@ import (
 	"time"
 )
 
-// MessageType is a placeholder for the various the message types.
+// MessageType is a custom type used as a placeholder for various message types.
 type MessageType int
 
 // The message types used accross the CLI application.